import 'package:flutter/material.dart';
import 'package:material_design_practice1/assignment.dart';
import 'package:material_design_practice1/course.dart';
import 'package:material_design_practice1/algebra.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: HomePage(),
    );
  }
}

class HomePage extends StatelessWidget{
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: "Material Design",
      home: Scaffold(
        appBar: AppBar(
          title: Text("Material Design"),
        ),
        body: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Container(
              alignment: Alignment.center,
              margin: EdgeInsets.all(12),
              child: RaisedButton(
                color: Colors.blue,
                textColor: Colors.white,
                child: Text("页面1"),
                onPressed: (){
                  Navigator.of(context).push(MaterialPageRoute(builder: (BuildContext context) => Page1()));
                },
              ),
            ),
            Container(
              alignment: Alignment.center,
              margin: EdgeInsets.all(12),
              child: RaisedButton(
                color: Colors.blue,
                textColor: Colors.white,
                child: Text("页面2"),
                onPressed: (){
                  Navigator.of(context).push(MaterialPageRoute(builder: (BuildContext context) => Page2()));
                },
              ),
            ),
            Container(
              alignment: Alignment.center,
              margin: EdgeInsets.all(12),
              child: RaisedButton(
                color: Colors.blue,
                textColor: Colors.white,
                child: Text("页面3"),
                onPressed: (){
                  Navigator.of(context).push(MaterialPageRoute(builder: (BuildContext context) => Page3()));
                },
              ),
            ),
          ],
        ),
      ),
    );
  }

}
